Explicație pas cu pas:
1.) 25702+871=26573
512700+19301=532001
53404+505300=558704
22100+300500=322600
838518+100671=939189
2.)58976+179485+7868=246329
3.)78325×2+17986=174636
4.)99999+999999=1099998
5.)275302+1111=276413